US3439085A - Process for the production of non-woven elastic polyurethane fabric - Google Patents

Process for the production of non-woven elastic polyurethane fabric Download PDF

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US3439085A
US3439085A US405617A US3439085DA US3439085A US 3439085 A US3439085 A US 3439085A US 405617 A US405617 A US 405617A US 3439085D A US3439085D A US 3439085DA US 3439085 A US3439085 A US 3439085A
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Prior art keywords
filaments
air
polyurethane
substantially endless
production
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US405617A
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Ludwig Hartmann
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Carl Freudenberg KG
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Carl Freudenberg KG
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Classifications

    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005Synthetic yarns or filaments
    • D04H3/009Condensation or reaction polymers
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/601Nonwoven fabric has an elastic quality
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/68Melt-blown nonwoven fabric
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/69Autogenously bonded nonwoven fabric

Definitions

  • the thread group of each nozzle, together with the band-shaped air currents enveloping it was introduced into elongated guide-channels, which were spaced 20 mm. from the nozzle bore holes.
  • the air channels had the following interior-measurements: 50 mm. plate distance, 340 mm. width, 600 mm. length.
  • the inner-walls of each air channel were rinsed with further cold air-streams, with the aid of two air slots of 0.3 mm. slot-height in each wall, disposed at the inlet and outlet side.
  • Example 2 from the outlet end of the air-channels.
  • the matting of the Example 2 The apparatus of Example 1 was used, but nozzles 1 and 3 were supplied with the above-described polyurethane, and nozzles 2 and 4 were supplied with polycaprolactam.
  • the Working conditions of the nozzle 2 and 4 were as follows: nozzle temperature 230 C., air temperature 230 C.
  • the fleece formed contained, in the ratio 1:1, endless polyurethane and polyamide filaments, bonded together at crossing points.

Description

United States Patent Int. (:1. D01f 7/56,- D06m 3/24 U.S. Cl. 264210 4 Claims This application relates to the production of filament material, and more particularly to the production of fabrics from filaments, especially non-woven fabrics.
This application is a continuation-in-part of application Ser. No. 341,489, filed Jan. 27, 1964, and the disclosure of the said co-pending application is incorporated herein by reference.
Ser. No. 341,489 discloses a process for spinning of filaments which comprises issuing a fused polymer mass in the form of filaments from several linear rows of spinneret holes of a spinneret head, and directing gas streams into impinging and entraining relation with the issuing fused polymer filaments to draw them and orient polymer molecules in the direction of the filament axis. The mass is drawn to reduce the diameter from the diameter of the spinneret hole in the ratio of at least 30:1, and the filaments are cooled to a set condition wherein the molecular orientation is retained. The filaments are maintained in drawn condition during the cooling by gas streams directed against the filaments to urge them to the drawn condition. In practical application, a multitude of linear, parallel filament rows are simultaneously drawn while keeping them in parallel arrangements within separate air channels, and the drawn and set filaments of the dilferent rows are finally collected on a screen or perforated roll for the formation of a fleece or mat.
It has now been found that the process of Ser. No. 341,489 can advantageously be utilized in the production of filaments from polyurethane. If a melt of polyurethane which is not cross linked or not completely cross linked is utilized in the process, and cross linking is permitted to occur during the drawing of the fused polymer issuing from the spinneret head, filaments, and in turn fabrics, characterized by uniformly high elasticity are obtained. Macro diisocyanate polyesters or polyethers containing glycols or diamines in an amount desirable for the intended cross linking, can be used. The moisture present in the air which is blown along the path of the fused polymer can be relied upon to cause the cross linking to occur.
Apparatus as is disclosed in Ser. No. 341,489 can be used in the practice of the instant invention. Thus, apparatus as is shown in Fig. of the drawing of the prior application can be used. Accordingly, the apparatus can include a plurality of parallel disposed nozzles, each having in excess of 100 holes of about 0.4 mm. diameter at a spacing of 2 mm., in a straight line. An air slot of 0.3 mm. width can be provided on each side of each line of spinneret holes at a spacing of 0.5 mm. from the line of holes. The nozzles can be heated to the temperature of the polyurethane melt or to the desired reaction temperature, and air heated to the same temperature can be blown through the slots to provide the desired drawing of the fused polymer. The air velocity leaving the slots is at least five times greater than the velocity of the threads issuing from the spinneret holes. The nozzles can be spaced about 60 mm. apart. At least about mm.
3,439,085 Patented Apr. 15, 1969 from the nozzles, in the direction of advance of the fused polymer, guide passageways are disposed. There is a guide passageway for each nozzle made up of a plate disposed above the plurality of filament forms and a plate disposed below the filament forms; the spacing of the plates is about 50 mm., and the passageway is 600 mm. in length (in the direction of travel of the filaments); the passageways terminate in the lateral direction about 10 mm. from the outermost filament form on each side. Air can be injected into the passageway through the plates, the air being injected from above and below the filaments. If desired, the guide passageways can be moved as is indicated in Fig. 8 of Ser. No. 341,489, in a rocking motion, to impart a corresponding movement to the filaments. The filaments can be collected on a drum or conveyor as is disclosed in Ser. No. 341,489.
If desired, filaments of different composition can be combined in a single fleece, using different nozzles for the different filament compositions. For example, a fabric could be formed of polyurethane and polyamide fibers.
The fibers when they are deposited on the collecting means wherein they are gathered into a fleece, can be in such condition that bonding of filaments occurs at filament crossing points. In this manner a bonded fleece can be obtained without the addition of binding agents. Such processing finds application where the fibers are all polyurethane polymer, and also where the fibers are mixtures of filaments of different composition, such as polyurethane and polyamide.
The invention is further described in the following examples.
Example 1 A granular polymer composition of parts of a condensation product of adipic acid ethylene glycol polyester and diphenyl methan-4,4'-diiso-cyanate, partially crosslinked with 30 parts butane-1,4-diol was melted in a wormpress at a temperature of 180 C. and supplied at a temperature of 200 C. to four spinning pumps. The spinning-pumps conveyed the melt to four spinning nozzles opening downwardly and heated to 205 0, arranged parallel to one another at a distance of 80 mm. apart. Each of the spinning-nozzles consisted of a straight line of holes of 400p. diameter, spaced apart 2 mm. so that each of the four longitudinal nozzles had a straight row of holes of 320 mm. length. An air slot was positioned on both sides of each line of holes. The slots were 3 mm. x 340 mm. length, and were spaced .5 mm. from the holes. Air heated to 205 C. with a pressure of 0.8 atmosphere gauge was supplied to the slots so that from both slots a band-shaped air-stream of about 340 mm. width issued. From the row of holes, in turn, issued a series of still melted polyurethane filaments, which at both sides were pulled forward by the band-shaped air streams, issuing with a velocity of about 5000 m./min. Therein the filaments were drawn from a cross-section of 400 to about 30;/.. Since the filaments were very viscid, and would upon touching at once stick together, turbulence formed through friction of the adjacent air-layers, had to be excluded. For this purpose, the thread group of each nozzle, together with the band-shaped air currents enveloping it was introduced into elongated guide-channels, which were spaced 20 mm. from the nozzle bore holes. The air channels had the following interior-measurements: 50 mm. plate distance, 340 mm. width, 600 mm. length. Additionally, the inner-walls of each air channel were rinsed with further cold air-streams, with the aid of two air slots of 0.3 mm. slot-height in each wall, disposed at the inlet and outlet side. The slots were at an angle of 10", so that an air rinsing impinged tangentially to the fiber flying direction. The pressure used for the rinse air was 3 atmospheres gauge on the slots. Through these measures it was possible to prevent a mutual entangling as well as touching of the individual filaments of each group. Since each individual nozzle had a channel allotted to it, the entangling of the threads of adjacent nozzles was not possible. The fleece formation took place after the filament left the air channels. The fibers and air-streams were separated with the aid of a screen through which suction was applied. The screen was mounted at a distance of 700 mm.
. from the outlet end of the air-channels. The matting of the Example 2 The apparatus of Example 1 was used, but nozzles 1 and 3 were supplied with the above-described polyurethane, and nozzles 2 and 4 were supplied with polycaprolactam. The Working conditions of the nozzle 2 and 4 were as follows: nozzle temperature 230 C., air temperature 230 C. The fleece formed contained, in the ratio 1:1, endless polyurethane and polyamide filaments, bonded together at crossing points.
Whereas in the examples, moisture in the air is relied upon to cause the cross linking which occurs during drawing of the filaments, any other known suitable means can be relied upon for providing the cross-linking conditions. In general, air at ambient conditions is suitable for the purpose.
What is claimed is:
1. Process for the production of non-woven elastic fabric, which comprises fusing a cross-linkable polyurethane mass; melt-spinning said fused mass into a multiplicity of substantially endless filaments; air-drawing said substantially endless filaments while maintaining said filaments in a hot and tacky state, whereby the molecules of said filaments are oriented in the direction of the axis of said filaments; laying said hot, tacky oriented substantially endless filaments on a supporting surface; cross-linkin-g said substantially endless filaments by means of moisture in said air; and welding said substantially endless polyurethane filaments to other such filaments by means of its tackiness, wherein said filaments become solid and non-tacky after said welding.
2. Process according to claim 1, wherein simultaneously a second polymer of different composition from said first-mentioned polymer is drawn into filaments in like manner, and the filaments of both polymers are collected together to form the fleece.
3. Process according to claim 1, wherein the filaments solidify after collection thereof in crossing relation and become bonded together at crossing points during the solidification.
4. Process according to claim 2, wherein the polyurethane filaments solidify after collection of both polymers in crossing relation and upon solidification filaments become bonded together at crossing points.
References Cited UNITED STATES PATENTS 2,810,426 10/1957 Till et al. 51-295 3,026,190 3/1962 McMahon et a1. 51-295 2,336,745 12/ 1943 Manning.
2,869,973 1/1959 Hubbard 16l--170 3,117,055 1/1964 Guandique et a1. 161170 3,154,611 10/1964 Dinber'gs 2 64176 3,158,525 11/1964 Reynolds 161-170 3,199,281 8/1965 Maerov et al 264210 2,411,660 11/1946 Manning 264176 DONALD J. ARNOLD, Primary Examiner.
US. Cl. X.R.

Claims (1)

1. PROCESS FOR THE PRODUCTION OF NON-WOVEN ELASTIC FABRIC, WHICH COMPRISES FUSING A CROSS-LINKABLE POLYURETHANE MASS; METL-SPINNING SAID FUSED MASS INTO A MULTIPLICITY OF SUBSTANTIALLY ENDLESS FILAMENTS; AIR-DRAWING SAID SUBSTANTIALLY ENDLESS FILAMENTS WHILE MAINTAINING SAID FILAMENTS IN A HOT AND TACKY STATE, WHEREBY THE MOLECULES OF SAID FILAMENTS ARE ORIENTED IN THE DIRECTION OF THE AXIS OF SAID FILAMENTS; LAYING SAID HOT, TACKY ORIENTED SUBSTANTIALLY ENDLESS FILAMETNS ON A SUPPORTING SURFACE; CROSS-LINKING SAID SUBSTANTIALLY ENDLESS FILAMENTS BY MEANS OF MOISTURE IN SAID AIR; AND WELDING SAID SUBSTANTIALLY ENDLESS POLYURETHANE FILAMENTS TO OTHER SUCH FILAMENTS BY MEANS OF ITS TACKINESS, WHEREIN SAID FILAMENTS BECOME SOLID AND NON-TACKY AFTER SAID WELDING.
US405617A 1963-10-25 1964-10-21 Process for the production of non-woven elastic polyurethane fabric Expired - Lifetime US3439085A (en)

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DE1963F0041089 DE1282590C2 (en) 1963-10-25 1963-10-25 APPARATUS FOR THE MANUFACTURING OF ANNEALED FIBERS FROM ENDLESS POLYMERIC FIBERS

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Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3607567A (en) * 1968-01-02 1971-09-21 Fmc Corp Apparatus for nonwoven fabric manufacture
US3684415A (en) * 1968-08-14 1972-08-15 Exxon Research Engineering Co Melt blown roving die
US3923587A (en) * 1972-01-04 1975-12-02 Rhone Poulenc Textile Apparatus for the manufacture of continuous filament nonwoven web
US4091140A (en) * 1976-05-10 1978-05-23 Johnson & Johnson Continuous filament nonwoven fabric and method of manufacturing the same
US4107364A (en) * 1975-06-06 1978-08-15 The Procter & Gamble Company Random laid bonded continuous filament cloth
FR2459317A1 (en) * 1979-06-19 1981-01-09 Freudenberg Carl POLYOLEFIN FILAMENT SPINNING TABLE AND METHOD FOR PREPARING THE SAME
JPS5782552A (en) * 1980-11-13 1982-05-24 Toray Industries Needle punched nonwoven fabric comprising elastic fiber and production thereof
US4351683A (en) * 1967-10-19 1982-09-28 Minnesota Mining And Manufacturing Company Method of forming web material
US5366793A (en) * 1992-04-07 1994-11-22 Kimberly Clark Co Anisotropic nonwoven fibrous web
DE4407808A1 (en) * 1994-03-09 1995-09-14 Irnich Rolf Dipl Min Reusable nappy pants for babies and patients
US6387471B1 (en) 1999-03-31 2002-05-14 Kimberly-Clark Worldwide, Inc. Creep resistant composite elastic material with improved aesthetics, dimensional stability and inherent latency and method of producing same
US20020104608A1 (en) * 2000-05-15 2002-08-08 Welch Howard M. Method and apparatus for producing laminated articles
US6547915B2 (en) 1999-04-15 2003-04-15 Kimberly-Clark Worldwide, Inc. Creep resistant composite elastic material with improved aesthetics, dimensional stability and inherent latency and method of producing same
US20030109842A1 (en) * 2001-12-12 2003-06-12 Louis Raymond Gerard St. Separated targeted elastic zone for improved process and product function
US20030108633A1 (en) * 2000-03-07 2003-06-12 Yukio Yamakawa Nonwoven thermoplastic elastomer fabric roll and method and apparatus for making same
US20030114824A1 (en) * 2001-12-19 2003-06-19 Odorzynski Thomas W. Three dimensional profiling of an elastic hot melt pressure sensitive adhesive to provide areas of differential tension
US20030124331A1 (en) * 2001-12-28 2003-07-03 Charles Morell Elastic strand bonded laminate
US20040006324A1 (en) * 2002-07-02 2004-01-08 Peiguang Zhou Garment including an elastomeric composite laminate
US20040005835A1 (en) * 2002-07-02 2004-01-08 Peiguang Zhou Elastic strand laminate
US20040019343A1 (en) * 2000-05-15 2004-01-29 Olson Christopher Peter Garment having an apparent elastic band
US6833179B2 (en) 2000-05-15 2004-12-21 Kimberly-Clark Worldwide, Inc. Targeted elastic laminate having zones of different basis weights
US20050142339A1 (en) * 2003-12-30 2005-06-30 Price Cindy L. Reinforced elastic laminate
US7316840B2 (en) 2002-07-02 2008-01-08 Kimberly-Clark Worldwide, Inc. Strand-reinforced composite material
US7316842B2 (en) 2002-07-02 2008-01-08 Kimberly-Clark Worldwide, Inc. High-viscosity elastomeric adhesive composition
US7601657B2 (en) 2003-12-31 2009-10-13 Kimberly-Clark Worldwide, Inc. Single sided stretch bonded laminates, and methods of making same
US20110052878A1 (en) * 2009-08-27 2011-03-03 Wen-Shan Lin Decorating cloth provided with the effect of stereoscopic vision
KR20220039726A (en) 2019-07-24 2022-03-29 샌트랄 글래스 컴퍼니 리미티드 Non-aqueous electrolyte, non-aqueous electrolyte battery and compound
KR20220044275A (en) 2019-08-06 2022-04-07 샌트랄 글래스 컴퍼니 리미티드 Manufacturing method of lithium difluorophosphate, manufacturing method of difluorophosphate ester, manufacturing method of lithium difluorophosphate, non-aqueous electrolyte, and manufacturing method of non-aqueous secondary battery

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DE1950669C3 (en) * 1969-10-08 1982-05-13 Metallgesellschaft Ag, 6000 Frankfurt Process for the manufacture of nonwovens
SU643556A1 (en) * 1970-08-06 1979-01-25 Феб Пласт Унд Эластферарбайтунгсмашиненкомбинат (Инопредприятие) Arrangement for forming a web of synthetic threads
DD128204B1 (en) * 1976-10-11 1979-05-30 Malcomess Hans Juergen METHOD AND DEVICE FOR PREPARING ELEMENTARY FADER LIQUID

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US2411660A (en) * 1943-05-22 1946-11-26 Fred W Manning Method of making filter cartridges, abrasive sheets, scouring pads, and the like
US2810426A (en) * 1953-12-24 1957-10-22 American Viscose Corp Reticulated webs and method and apparatus for their production
US2869973A (en) * 1954-08-25 1959-01-20 Du Pont Synthetic paper sheet of chemically bonded synthetic polymer fibers and process of making the same
US3026190A (en) * 1958-12-02 1962-03-20 American Viscose Corp Elastomer bonded abrasives
US3117055A (en) * 1959-12-15 1964-01-07 Du Pont Non-woven fabrica
US3158525A (en) * 1960-09-26 1964-11-24 Du Pont Resin coated unwoven fabric
US3199281A (en) * 1961-09-27 1965-08-10 Du Pont Composite polyester yarn of differentially shrinkable continuous filaments
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Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4351683A (en) * 1967-10-19 1982-09-28 Minnesota Mining And Manufacturing Company Method of forming web material
US3607567A (en) * 1968-01-02 1971-09-21 Fmc Corp Apparatus for nonwoven fabric manufacture
US3684415A (en) * 1968-08-14 1972-08-15 Exxon Research Engineering Co Melt blown roving die
US3923587A (en) * 1972-01-04 1975-12-02 Rhone Poulenc Textile Apparatus for the manufacture of continuous filament nonwoven web
US4107364A (en) * 1975-06-06 1978-08-15 The Procter & Gamble Company Random laid bonded continuous filament cloth
US4091140A (en) * 1976-05-10 1978-05-23 Johnson & Johnson Continuous filament nonwoven fabric and method of manufacturing the same
FR2459317A1 (en) * 1979-06-19 1981-01-09 Freudenberg Carl POLYOLEFIN FILAMENT SPINNING TABLE AND METHOD FOR PREPARING THE SAME
JPS633992B2 (en) * 1980-11-13 1988-01-27 Toray Industries
JPS5782552A (en) * 1980-11-13 1982-05-24 Toray Industries Needle punched nonwoven fabric comprising elastic fiber and production thereof
US5366793A (en) * 1992-04-07 1994-11-22 Kimberly Clark Co Anisotropic nonwoven fibrous web
DE4407808A1 (en) * 1994-03-09 1995-09-14 Irnich Rolf Dipl Min Reusable nappy pants for babies and patients
US6387471B1 (en) 1999-03-31 2002-05-14 Kimberly-Clark Worldwide, Inc. Creep resistant composite elastic material with improved aesthetics, dimensional stability and inherent latency and method of producing same
US6547915B2 (en) 1999-04-15 2003-04-15 Kimberly-Clark Worldwide, Inc. Creep resistant composite elastic material with improved aesthetics, dimensional stability and inherent latency and method of producing same
US20030119411A1 (en) * 2000-03-07 2003-06-26 Yukio Yamakawa Nonwoven thermoplastic elastomer fabric roll and method and apparatus for making same
US6784125B1 (en) 2000-03-07 2004-08-31 Kanebo, Ltd. Nonwoven thermoplastic elastomer fabric roll and method and apparatus for making same
US20030108633A1 (en) * 2000-03-07 2003-06-12 Yukio Yamakawa Nonwoven thermoplastic elastomer fabric roll and method and apparatus for making same
US20020104608A1 (en) * 2000-05-15 2002-08-08 Welch Howard M. Method and apparatus for producing laminated articles
US8182457B2 (en) 2000-05-15 2012-05-22 Kimberly-Clark Worldwide, Inc. Garment having an apparent elastic band
US6969441B2 (en) 2000-05-15 2005-11-29 Kimberly-Clark Worldwide, Inc. Method and apparatus for producing laminated articles
US20040019343A1 (en) * 2000-05-15 2004-01-29 Olson Christopher Peter Garment having an apparent elastic band
US6833179B2 (en) 2000-05-15 2004-12-21 Kimberly-Clark Worldwide, Inc. Targeted elastic laminate having zones of different basis weights
US20030109842A1 (en) * 2001-12-12 2003-06-12 Louis Raymond Gerard St. Separated targeted elastic zone for improved process and product function
US20030114824A1 (en) * 2001-12-19 2003-06-19 Odorzynski Thomas W. Three dimensional profiling of an elastic hot melt pressure sensitive adhesive to provide areas of differential tension
US6939334B2 (en) 2001-12-19 2005-09-06 Kimberly-Clark Worldwide, Inc. Three dimensional profiling of an elastic hot melt pressure sensitive adhesive to provide areas of differential tension
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